2. Elena completed the 100-meter run in 15.58 seconds. a. How much faster would

Question

2. Elena completed the 100-meter run in 15.58 seconds. a. How much faster would she have had to run to tie the record b. If she could have run 400 meters at the same rate as she ran 100 meters, would she have broken the record? Find the difference between her time for 400 meters and the record time. c. The 400-meter run consists of four laps around a 100-meter track What was the record holder's average time per lap? Times and distances are sometimes given by comparing them with the record has been broken. A positive number indicates the amount by 3. In the discus throw, Devan scored 7. Ipel scored +15, and Greg b. Leos score was 4 less than Greg's. What was Leo's score? record for the event. A negative number indicates the amount by which a which the record has failed to be broken. scored the opposite of Devan. a. By how much did Greg's distance exceed Joel's? c. Order the scores from greatest to least. record for the event when scores are given as integers na 4. Explain how you can use absolute value to compare a score with the

Explanation / Answer

2.
(a) In order to tie the record, she would have had to run 100 meters in 13.76 sec

(b) 400 meter run record timings are 1 min 5.21 sec i.e. 65.21 sec.
If the 400 meter run is completed with same rate as of 100 meters, time required = 4 * 15.58 = 62.32 sec

Diff. in time = 65.21 - 62.32 = 2.89 sec

(c) Total time taken by record holder to complete 400 meter run = 65.21 sec
time taken per track = 65.21 / 4= 16.3025 sec

  

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